This is supposed to be mainly reformatting with a couple of refactoring
touches. No functional changes are intended.

Otherwise, the debugging becomes rather annoying.

This makes the test more transparent.

This reverts commit 584cabb1.

* We do this at least temporarily to monitor that the test works.

Unify PPM CORE location interface and check whether the library is really available in the configure script.

Unify YAXT location interface and check whether the library is really available in the configure script.

See https://github.com/Unidata/netcdf-c/blob/cd39b9d2d83fed40a45e8a8dd748a6bceae5ddfa/include/netcdf_par.h#L13-L18

Also, get rid of ac_fn_c_check_header_mongrel in the configure script.

Thomas Jahns authored 5 years ago and Sergey Kosukhin committed 2 years ago

* This also allows for overrides at make invocation.

Thomas Jahns authored 5 years ago and Sergey Kosukhin committed 2 years ago

* When CXX=CC and FC=ftn are used simultaneously on a CCE 8.7 system,
  ftn inherits the output_verbose_link_cmd as postdeps from the C++
  tests and everything goes wrong afterwards even for non-shared
  archives.

Thomas Jahns authored 5 years ago and Sergey Kosukhin committed 2 years ago

* This was needed to get working builds on Piz Daint, libtool 2.4.2 generated
  bogus dependencies on libquadmath.so.